Journal
INORGANIC CHEMISTRY
Volume 46, Issue 21, Pages 8496-8498Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic701504z
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Five-coordinate platinum(IV)alkyl complexes bearing sterically nondemanding pyridylpyrrolide ligands, (LX)PtMe3 [LX = 3,5-di-tertbutyl-2-(2-pyridyl)pyrrolide (3a) and 3,5-diphenyl-2-(2-pyridyl)pyrrolide (3b)] have been prepared. An X-ray structure of 3a establishes that it is a five-coordinate Pt-IV complex with a square-pyramidal geometry. Thermolysis of 3a or 3b in CA with ethylene results in reductive elimination of ethane (C2H6) and methane (CH4 and CH3D and the formation of cyclometalated platinum(II) ethylene complexes 4a or 4b, respectively. Results of kinetic investigations of the reaction of 3b are consistent With a mechanism of direct C-C reductive elimination from the five-coordinate Pt-IV compound. Thermolysis of 3a in CA with no ethylene present forms a novel dinuclear complex (5-d(6)).
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